/*
*
* Copyright (C) 2004 - 2008 BitLaboratory (see http://www.bitlaboratory.com)
* All rights reserved. 
*
* Redistribution and use in source and binary forms, with or without modification, 
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
*    this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the documentation
*    and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission. 
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
* OF SUCH DAMAGE.
*
* You can find the latest version of this library at http://www.bitlaboratory.com
*
*/


using System;
using System.Runtime.InteropServices;
using BitLaboratory.Win32Api;

namespace BitLaboratory.Win32Api.Drawing
{
	/// <summary>
	/// 
	/// </summary>
	public class APIText
	{
		[DllImport("user32.dll", CharSet=CharSet.Auto)]
		public extern static int DrawText(IntPtr hdc, string lpString, int nCount, ref RECT lpRect, DrawTextFormatFlags uFormat);

		[DllImport("gdi32.dll", CharSet=CharSet.Auto)]
		public static extern bool GetTextMetrics(IntPtr hdc, out TEXTMETRIC lptm);

		public static TEXTMETRIC GetTextMetrics(IntPtr hdc)
		{
			TEXTMETRIC textmetric;
			APIText.GetTextMetrics(hdc, out textmetric);
			return textmetric;
		}

		[DllImport("gdi32.dll", CharSet=CharSet.Auto)]
		public static extern bool GetCharWidth(IntPtr hdc, uint firstChar, uint lastChar, [Out, MarshalAs(UnmanagedType.LPArray)] int[] widths);

		public static int[] GetCharWidth(IntPtr hdc, uint firstChar, uint lastChar)
		{
			uint chars = (lastChar - firstChar) + 1;
			int[] widths = new int[chars];
			APIText.GetCharWidth(hdc, firstChar, lastChar, widths);
			return widths;
		}

		[DllImport("Gdi32.dll", CharSet=CharSet.Auto)]
		public static extern int GetKerningPairs(IntPtr hdc, int nNumPairs, [In, Out, MarshalAs(UnmanagedType.LPArray, SizeParamIndex=1)] KERNINGPAIR[] kerningPairs);

		public static KERNINGPAIR[] GetKerningPairs(IntPtr hdc)
		{
			int count = APIText.GetKerningPairs(hdc, 0, null);
			if( count == 0 )
			{
				return null;
			}

			KERNINGPAIR[] pairs = new KERNINGPAIR[count];
			APIText.GetKerningPairs(hdc, count, pairs);
			return pairs;
		}

		[DllImport("gdi32.dll")]
		public static extern int SetTextColor(IntPtr hdc, int color);

		[DllImport("gdi32.dll", CharSet=CharSet.Auto)]
		public static extern int ExtTextOut(IntPtr hdc, int x, int y, int fuOptions, ref RECT lprc, string lpString, int cbCount, [In, MarshalAs(UnmanagedType.LPArray)] int[] lpDx);

		[DllImport("gdi32.dll", CharSet=CharSet.Auto)]
		public static extern int ExtTextOut(IntPtr hdc, int x, int y, ExtTextOutOptions fuOptions, ref RECT lprc, string lpString, int cbCount, [In, MarshalAs(UnmanagedType.LPArray)] int[] lpDx);

		[DllImport("gdi32.dll")]
		public static extern int GetTextColor(IntPtr hdc);
	}
}
